Rail fastening



RAIL FASTENING Filed May 27. 1926 Figi.

MVA

Fig. 2.

35 the rail head'and rail foot.

ing piece e is also so formed that, after being` Fatented F eb. 14, 1928.

Lesazse UNITED STATES PATEN rFicE.

THEODOB BUCHEOLZ, F BERLIN-ZEELENDOBF-WEST, GERMANY..

RAIL FASTENING.

Application led May 27, 1926, Serial No. 112,135, .and in Germany June 4, 1925.

e rlihis is eected by the joint and sole plate being provided with ribs of diiierent height, oi which the lower one lying inside ofthe rail serves for the reception of the clamping screws, while the high rib lying outside the lo raii is provided with inwar-dly projecting parts, against which wedge-shaped pieces inserted between the rail and the higher rib abut, when the fixing bolts which extend through the rib, the wedge-shaped pieces and the rail are tightened up.

ln the accompanying drawing Figure l shows one constructional form ot' the invention with arhigh rib and a low rib, Figure 2 a port-ion of the low rib with the clamping 2o bolt for holding the bridging member iu position and Figure 3 is a side elevation of a detail.

The sole plate a has a low rib b which is provided with a suitably formed recess for 25 the reception of the hammer-headed bolts f,

which have heads with inclined sides. A high rib c is also provided, which has an inwardly projecting part d, -against the inclined surface t of which a filling piece e 3o abuts. The filling piece e which is shown in side elevation in Fig. k3 -is dished and on the iixing bolt 7 being tightened, is pressed by .a collar u on the shank to the bolt with its suitably formed inclined surfaces against The dished fillturned through 180, the gauge can be adjusted by the suitably reduced or increased side walls being caused to abut against the eo inclined surface t. In this way the filling piece, which may also be called a gauge-adjusting member, replaces two gauge adjusters of dii'erent sizes. The collar u and the corresponding, abutment surface of the filling piece e are preferably made wedgeshaped for producing .a better clamping effeet. 0n the other side of the rail a fishplate g is provided, which, on the fixing bolt-being tightened, is pressed against the rail head and foot exactly similarly to the hlling piece e.

For preventing the rail tilting about the point A towards the high rib c the rail foot lying close to the low rib b is held in position t5 bya clamping bridge piece h,'the inner leg h1 of which is preferably so formed as to 1mpres's the outer edge of the rail foot.. The projection 71,2 has the object of preventing the bridge piece trom turning,Y when the hammer-headed bolt is tightened up.

The sole plate a is iixed to the sleeper by means of coach screws in such a manner that the low rib i, of the sole-plate will lie on the inner side of the rail so that the transverse thrusts on the rail head caused by the flange of a wheel .are taken up bythe high rib c lying on the outside. lin assembling the parts the nut n is first tightened which lies on'the inner side of the rail, so that the the inner leg it of which rests against the inner rail foot, whereby the rail is prevented from tilting about the point A, It the soleplate is to rest at the foot of the rail on two y sleepers at a normal distance apart, it is made so strong that it alone can take up the thrust of the wheels. For increasing the moment of inertia the outer rib c can be enlarged towards the top or raised. By this means the neutral zone is placed in the centre of the cross-section.

Figure 2 shows the low rib b with the inserted hammer headed bolt f. The rib is provided above the sole-plate with an upwardly tapering recess for receiving the hammer-headed bolt, so that good abutment surfaces are formed for the correspondingly formed hammer head, whilst the rib is kept as low as possible.

l. A rail joint and rsole-plate comprising two ribs of different height, a low rib lying inside' the rail and a high rib lying outside the rail, a clamping bridge piece bridging over the low rib, a bolt for clamping the sole-plate comprising ,oijirestingjaganst the said projecting piece and a bolt extending throughfthe wedge' sha and the rail for tightening the rai an the wedge-shaped piece against the highrib, .asand or the purpose set forth. ,3.- A rail joint and'sole-plate com rising two ribs of different height, a low ri lying inside the rail and a high rib lyingou'tside the rail, a clamping brld'ge piece bridging over the low'rib, a boltrfor Iclamping the bridge. piece to the low rib, an inwardl projecting piece on thehigh rib, a wedge-s aped piece capable of being placed between the high rib and the, rail," an inclined surface on the inside of the high rib, an inclined surface on the' side of the wedge-shapedfmember, capable of resting against the inclinedsurface ofthe high rib, the ywedge-shaped member being capable of resting against the head and foot of the rail, and a bolt extending through the wedge-shaped iece and the rail for tightening the rail and the wed eshaped piece against the high rib, as and or the purpose set forth.

4. A rail joint and sole-plate comprising two ribs of different height, a low rib lying inside the rail and a high rib lyingl outside the' rail; a clam ing bridge piece ridging .overfth'e -low ri a bolt for clamping the bridge piece to the low rib, an inwardl projectingpiece on the high rib, a wedgeaped c gauge adjusting member of rectangular cross-section capable of being placed between the high rib and the rail and of being turned for altering the auge of the rails,-and a. bolt extending tirough the wedge-shaped piece and the rail for tightening the rail and the wedge-shaped piece against the high rib, as and for the purpose set forth.

5. A rail jolnt and sole-plate com rising two ribs of different height, a low ri lying inside the rail and a high rib lying) the rail, a clamping brid e piece ridging over the low rib, an upwar y tapering recess in the low rib, a bolt with a tapering hammer head capable of engaging in the said recess for clamping the bridge piece to tbe low rib, an inwardly projecting piece on the high rib, a wedge-shaped piece capable of being placed between the high rib and the rail and of resting against the said projecting piece and a bolt extending through the wedgeshaped piece and the rail for tightening the rail and the wedge-shaped piece against the high rib, as and for the purpose set forth.

In testimony( whereof I have signed my name to this specification.

` THEODOR YBUCHHOLZ. 

